On Sat, 09 Apr 2011 09:10:26 +0200, George Kashperko <george@xxxxxxxxxxx>
wrote:
On Fri, 08 Apr 2011 18:56:13 +0200, RafaÅ MiÅecki <zajec5@xxxxxxxxx>
wrote:
> 2011/4/6 Arend van Spriel <arend@xxxxxxxxxxxx>:
>> 3. Device identification
>>
>> The cores are identified by manufacturer, core id and revision in
your
>> patch. I would not use the revision because 4 out of 5 times a
revision
>> change does indicate a hardware change but no change in programming
>> interface. The enumeration data does contain a more selective field
>> indicating the core class (4 bits following the core identifier). I
>> suggest
>> to replace the revision field by this class field.
>
> Could you say something more about *class*, please? For my BCM43224 it
> seems to be 0x0. WIll check BCM4313 in a moment.
>
In principal the manufacturer id is unique (defined/assigned by JEDEC
www.jedec.org) and the chip id and chip class are defined by the
manufacturer. So I can only indicate what classes Broadcom uses in
combination with the manufacturer id BRCM, ARM and MIPS.
/* Component Classes */
#define CC_SIM 0
#define CC_EROM 1
#define CC_CORESIGHT 9
#define CC_VERIF 0xb
#define CC_OPTIMO 0xd
#define CC_GEN 0xe
#define CC_PRIMECELL 0xf
Looking at this it seems strange that you see a class value of 0x0. It
may
be rarely used or for non-production chips only (for simulation, chip
bringup) which may require additional (debug) functions. So question is
whether you will need it, but it is specified by ARM and it is up to
manufacturers to use it. So I it is better to be safe than sorry and
have
this in the device id.
Gr. AvS
When parsing bcm4716 EROM I have
cia & CIA_CCL_MASK equal to 0 for all 9 cores
You mentioned ARM DMP (Device Management Plugin) several times in
earlier messages some time ago but I can't find anything relevant about
that at ARM infocenter. Any chance you can point more precise location
for any DMP reference?
I believe this is part of the CoreLink AMBA Designer tool, which is used
to design/configure a SoC. The DMP is ARM system IP and so references are
under ARM copyright. You need a special account with ARM to get access to
these references.
Gr. AvS
--
"The world is indeed comic, but the joke is on mankind." â H.P. Lovecraft
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